MFS SERIES TRUST V
NSAR-A, 2000-05-26
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<PAGE>      PAGE  1
000 A000000 03/31/2000
000 C000000 0000200489
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 MFS SERIES TRUST V
001 B000000 811-2031
001 C000000 6179545000
002 A000000 500 BOYLSTON STREET
002 B000000 BOSTON
002 C000000 MA
002 D010000 02116
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000  5
007 C010100  1
007 C020100 MFS TOTAL RETURN FUND
007 C030100 N
007 C010200  2
007 C020200 MFS RESEARCH FUND
007 C030200 N
007 C010300  3
007 C020300 MFS INTERNATIONAL OPPORTUNITIES FUND
007 C030300 N
007 C010400  4
007 C020400 MFS INTERNATIONAL STRATEGIC GROWTH FUND
007 C030400 N
007 C010500  5
007 C020500 MFS INTERNATIONAL VALUE FUND
007 C030500 N
007 C010600  6
007 C010700  7
007 C010800  8
007 C010900  9
007 C011000 10
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010 C01AA01 BOSTON
<PAGE>      PAGE  2
010 C02AA01 MA
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<PAGE>      PAGE  3
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<PAGE>      PAGE  4
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<PAGE>      PAGE  5
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<PAGE>      PAGE  6
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<PAGE>      PAGE  7
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<PAGE>      PAGE  8
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<PAGE>      PAGE  9
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<PAGE>      PAGE  10
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<PAGE>      PAGE  12
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<PAGE>      PAGE  13
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<PAGE>      PAGE  14
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<PAGE>      PAGE  15
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<PAGE>      PAGE  16
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<PAGE>      PAGE  17
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<PAGE>      PAGE  19
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<PAGE>      PAGE  20
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<PAGE>      PAGE  21
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<PAGE>      PAGE  22
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<PAGE>      PAGE  23
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<PAGE>      PAGE  25
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<PAGE>      PAGE  31
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<PAGE>      PAGE  35
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SIGNATURE   JAMES O. YOST
TITLE       ASSISTANT TREASURER



<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 011
   <NAME> MFS TOTAL RETURN FUND CLASS A
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               MAR-31-2000
<INVESTMENTS-AT-COST>                       5658195695
<INVESTMENTS-AT-VALUE>                      5887272647
<RECEIVABLES>                                 85888450
<ASSETS-OTHER>                                   93651
<OTHER-ITEMS-ASSETS>                            496194
<TOTAL-ASSETS>                              5973750942
<PAYABLE-FOR-SECURITIES>                      31763275
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                     18436747
<TOTAL-LIABILITIES>                           50200022
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    5688610254
<SHARES-COMMON-STOCK>                        246501799
<SHARES-COMMON-PRIOR>                        253842933
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                       (2863746)
<ACCUMULATED-NET-GAINS>                        8729033
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                     229075379
<NET-ASSETS>                                5923550920
<DIVIDEND-INCOME>                             40968369
<INTEREST-INCOME>                             92667647
<OTHER-INCOME>                                (311876)
<EXPENSES-NET>                              (35819141)
<NET-INVESTMENT-INCOME>                       97504999
<REALIZED-GAINS-CURRENT>                      29406692
<APPREC-INCREASE-CURRENT>                    118727320
<NET-CHANGE-FROM-OPS>                        245639011
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                   (59316899)
<DISTRIBUTIONS-OF-GAINS>                   (236088862)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                       48911547
<NUMBER-OF-SHARES-REDEEMED>                 (74985471)
<SHARES-REINVESTED>                           18732790
<NET-CHANGE-IN-ASSETS>                     (548872619)
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    393033256
<OVERDISTRIB-NII-PRIOR>                      (5393683)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         10745469
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               36261204
<AVERAGE-NET-ASSETS>                        6213022404
<PER-SHARE-NAV-BEGIN>                            14.57
<PER-SHARE-NII>                                   0.24
<PER-SHARE-GAIN-APPREC>                           0.39
<PER-SHARE-DIVIDEND>                            (0.23)
<PER-SHARE-DISTRIBUTIONS>                       (0.94)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              14.03
<EXPENSE-RATIO>                                   0.89


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 012
   <NAME> MFS TOTAL RETURN FUND CLASS B
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               MAR-31-2000
<INVESTMENTS-AT-COST>                       5658195695
<INVESTMENTS-AT-VALUE>                      5887272647
<RECEIVABLES>                                 85888450
<ASSETS-OTHER>                                   93651
<OTHER-ITEMS-ASSETS>                            496194
<TOTAL-ASSETS>                              5973750942
<PAYABLE-FOR-SECURITIES>                      31763275
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                     18436747
<TOTAL-LIABILITIES>                           50200022
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    5688610254
<SHARES-COMMON-STOCK>                        139195859
<SHARES-COMMON-PRIOR>                        152175734
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                       (2863746)
<ACCUMULATED-NET-GAINS>                        8729033
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                     229075379
<NET-ASSETS>                                5923550920
<DIVIDEND-INCOME>                             40968369
<INTEREST-INCOME>                             92667647
<OTHER-INCOME>                                (311876)
<EXPENSES-NET>                              (35819141)
<NET-INVESTMENT-INCOME>                       97504999
<REALIZED-GAINS-CURRENT>                      29406692
<APPREC-INCREASE-CURRENT>                    118727320
<NET-CHANGE-FROM-OPS>                        245639011
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                   (28229398)
<DISTRIBUTIONS-OF-GAINS>                   (141602847)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        9892450
<NUMBER-OF-SHARES-REDEEMED>                 (34145179)
<SHARES-REINVESTED>                           11272854
<NET-CHANGE-IN-ASSETS>                     (548872619)
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    393033256
<OVERDISTRIB-NII-PRIOR>                      (5393683)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         10745469
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               36261204
<AVERAGE-NET-ASSETS>                        6213022404
<PER-SHARE-NAV-BEGIN>                            14.57
<PER-SHARE-NII>                                   0.19
<PER-SHARE-GAIN-APPREC>                           0.39
<PER-SHARE-DIVIDEND>                            (0.19)
<PER-SHARE-DISTRIBUTIONS>                       (0.94)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              14.02
<EXPENSE-RATIO>                                   1.53


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 013
   <NAME> MFS TOTAL RETURN FUND CLASS C
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               MAR-31-2000
<INVESTMENTS-AT-COST>                       5658195695
<INVESTMENTS-AT-VALUE>                      5887272647
<RECEIVABLES>                                 85888450
<ASSETS-OTHER>                                   93651
<OTHER-ITEMS-ASSETS>                            496194
<TOTAL-ASSETS>                              5973750942
<PAYABLE-FOR-SECURITIES>                      31763275
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                     18436747
<TOTAL-LIABILITIES>                           50200022
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    5688610254
<SHARES-COMMON-STOCK>                         33553247
<SHARES-COMMON-PRIOR>                         34761005
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                       (2863746)
<ACCUMULATED-NET-GAINS>                        8729033
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                     229075379
<NET-ASSETS>                                5923550920
<DIVIDEND-INCOME>                             40968369
<INTEREST-INCOME>                             92667647
<OTHER-INCOME>                                (311876)
<EXPENSES-NET>                              (35819141)
<NET-INVESTMENT-INCOME>                       97504999
<REALIZED-GAINS-CURRENT>                      29406692
<APPREC-INCREASE-CURRENT>                    118727320
<NET-CHANGE-FROM-OPS>                        245639011
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                    (6593868)
<DISTRIBUTIONS-OF-GAINS>                    (32927178)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        4444973
<NUMBER-OF-SHARES-REDEEMED>                  (8202468)
<SHARES-REINVESTED>                            2549737
<NET-CHANGE-IN-ASSETS>                     (548872619)
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    393033256
<OVERDISTRIB-NII-PRIOR>                      (5393683)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         10745469
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               36261204
<AVERAGE-NET-ASSETS>                        6213022404
<PER-SHARE-NAV-BEGIN>                            14.61
<PER-SHARE-NII>                                   0.19
<PER-SHARE-GAIN-APPREC>                           0.40
<PER-SHARE-DIVIDEND>                            (0.19)
<PER-SHARE-DISTRIBUTIONS>                       (0.94)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              14.07
<EXPENSE-RATIO>                                   1.53


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 014
   <NAME> MFS TOTAL RETURN FUND CLASS I
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               MAR-31-2000
<INVESTMENTS-AT-COST>                       5658195695
<INVESTMENTS-AT-VALUE>                      5887272647
<RECEIVABLES>                                 85888450
<ASSETS-OTHER>                                   93651
<OTHER-ITEMS-ASSETS>                            496194
<TOTAL-ASSETS>                              5973750942
<PAYABLE-FOR-SECURITIES>                      31763275
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                     18436747
<TOTAL-LIABILITIES>                           50200022
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    5688610254
<SHARES-COMMON-STOCK>                          3040008
<SHARES-COMMON-PRIOR>                          3295214
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                       (2863746)
<ACCUMULATED-NET-GAINS>                        8729033
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                     229075379
<NET-ASSETS>                                5923550920
<DIVIDEND-INCOME>                             40968369
<INTEREST-INCOME>                             92667647
<OTHER-INCOME>                                (311876)
<EXPENSES-NET>                               (35819141)
<NET-INVESTMENT-INCOME>                       97504999
<REALIZED-GAINS-CURRENT>                      29406692
<APPREC-INCREASE-CURRENT>                    118727320
<NET-CHANGE-FROM-OPS>                        245639011
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (834897)
<DISTRIBUTIONS-OF-GAINS>                     (3092028)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                         343477
<NUMBER-OF-SHARES-REDEEMED>                   (881327)
<SHARES-REINVESTED>                             282644
<NET-CHANGE-IN-ASSETS>                     (548872619)
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    393033256
<OVERDISTRIB-NII-PRIOR>                      (5393683)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         10745469
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               36261204
<AVERAGE-NET-ASSETS>                        6213022404
<PER-SHARE-NAV-BEGIN>                            14.57
<PER-SHARE-NII>                                   0.26
<PER-SHARE-GAIN-APPREC>                           0.40
<PER-SHARE-DIVIDEND>                            (0.26)
<PER-SHARE-DISTRIBUTIONS>                       (0.94)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              14.03
<EXPENSE-RATIO>                                   0.53


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 021
   <NAME> MFS RESEARCH FUND - CLASS A
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               MAR-31-2000
<INVESTMENTS-AT-COST>                       5628137572
<INVESTMENTS-AT-VALUE>                      8165649561
<RECEIVABLES>                                258670995
<ASSETS-OTHER>                                   66587
<OTHER-ITEMS-ASSETS>                         567284751
<TOTAL-ASSETS>                              8991671894
<PAYABLE-FOR-SECURITIES>                     114351341
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    650719229
<TOTAL-LIABILITIES>                          765070570
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    4898327334
<SHARES-COMMON-STOCK>                        121465183
<SHARES-COMMON-PRIOR>                        119675882
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                      (16367699)
<ACCUMULATED-NET-GAINS>                      809433432
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    2535208257
<NET-ASSETS>                                8226601324
<DIVIDEND-INCOME>                             26526360
<INTEREST-INCOME>                              5131965
<OTHER-INCOME>                                (206430)
<EXPENSES-NET>                              (47397596)
<NET-INVESTMENT-INCOME>                     (15945701)
<REALIZED-GAINS-CURRENT>                     773495378
<APPREC-INCREASE-CURRENT>                   1318839792
<NET-CHANGE-FROM-OPS>                       2076389469
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                   (249638542)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                       83070477
<NUMBER-OF-SHARES-REDEEMED>                 (89377112)
<SHARES-REINVESTED>                            8095936
<NET-CHANGE-IN-ASSETS>                      1691799749
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    582534965
<OVERDISTRIB-NII-PRIOR>                       (421998)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         15925860
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               48125358
<AVERAGE-NET-ASSETS>                        7382393721
<PER-SHARE-NAV-BEGIN>                            25.58
<PER-SHARE-NII>                                 (0.01)
<PER-SHARE-GAIN-APPREC>                           8.02
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (2.14)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              31.45
<EXPENSE-RATIO>                                   0.96


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 022
   <NAME> MFS RESEARCH FUND - CLASS B
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               MAR-31-2000
<INVESTMENTS-AT-COST>                       5628137572
<INVESTMENTS-AT-VALUE>                      8165649561
<RECEIVABLES>                                258670995
<ASSETS-OTHER>                                   66587
<OTHER-ITEMS-ASSETS>                         567284751
<TOTAL-ASSETS>                              8991671894
<PAYABLE-FOR-SECURITIES>                     114351341
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    650719229
<TOTAL-LIABILITIES>                          765070570
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    4898327334
<SHARES-COMMON-STOCK>                        115528453
<SHARES-COMMON-PRIOR>                        111314753
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                      (16367699)
<ACCUMULATED-NET-GAINS>                      809433432
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    2535208257
<NET-ASSETS>                                8226601324
<DIVIDEND-INCOME>                             26526360
<INTEREST-INCOME>                              5131965
<OTHER-INCOME>                                (206430)
<EXPENSES-NET>                              (47397596)
<NET-INVESTMENT-INCOME>                     (15945701)
<REALIZED-GAINS-CURRENT>                     773495378
<APPREC-INCREASE-CURRENT>                   1318839792
<NET-CHANGE-FROM-OPS>                       2076389469
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                   (235896495)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        9253144
<NUMBER-OF-SHARES-REDEEMED>                 (12539023)
<SHARES-REINVESTED>                            7499579
<NET-CHANGE-IN-ASSETS>                      1691799749
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    582534965
<OVERDISTRIB-NII-PRIOR>                       (421998)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         15925860
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               48125358
<AVERAGE-NET-ASSETS>                        7382393721
<PER-SHARE-NAV-BEGIN>                            24.74
<PER-SHARE-NII>                                 (0.10)
<PER-SHARE-GAIN-APPREC>                           7.73
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (2.14)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              30.23
<EXPENSE-RATIO>                                   1.61



</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 023
   <NAME> MFS RESEARCH FUND - CLASS C
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               MAR-31-2000
<INVESTMENTS-AT-COST>                       5628137572
<INVESTMENTS-AT-VALUE>                      8165649561
<RECEIVABLES>                                258670995
<ASSETS-OTHER>                                   66587
<OTHER-ITEMS-ASSETS>                         567284751
<TOTAL-ASSETS>                              8991671894
<PAYABLE-FOR-SECURITIES>                     114351341
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    650719229
<TOTAL-LIABILITIES>                          765070570
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    4898327334
<SHARES-COMMON-STOCK>                         29506926
<SHARES-COMMON-PRIOR>                         28270737
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                      (16367699)
<ACCUMULATED-NET-GAINS>                      809433432
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    2535208257
<NET-ASSETS>                                8226601324
<DIVIDEND-INCOME>                             26526360
<INTEREST-INCOME>                              5131965
<OTHER-INCOME>                                (206430)
<EXPENSES-NET>                              (47397596)
<NET-INVESTMENT-INCOME>                     (15945701)
<REALIZED-GAINS-CURRENT>                     773495378
<APPREC-INCREASE-CURRENT>                   1318839792
<NET-CHANGE-FROM-OPS>                       2076389469
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                    (59513382)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        5223867
<NUMBER-OF-SHARES-REDEEMED>                  (5609589)
<SHARES-REINVESTED>                            1621911
<NET-CHANGE-IN-ASSETS>                      1691799749
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    582534965
<OVERDISTRIB-NII-PRIOR>                       (421998)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         15925860
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               48125358
<AVERAGE-NET-ASSETS>                        7382393721
<PER-SHARE-NAV-BEGIN>                            24.75
<PER-SHARE-NII>                                 (0.10)
<PER-SHARE-GAIN-APPREC>                           7.74
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (2.14)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              30.25
<EXPENSE-RATIO>                                   1.61



</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 024
   <NAME> MFS RESEARCH FUND - CLASS I
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               MAR-31-2000
<INVESTMENTS-AT-COST>                       5628137572
<INVESTMENTS-AT-VALUE>                      8165649561
<RECEIVABLES>                                258670995
<ASSETS-OTHER>                                   66587
<OTHER-ITEMS-ASSETS>                         567284751
<TOTAL-ASSETS>                              8991671894
<PAYABLE-FOR-SECURITIES>                     114351341
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    650719229
<TOTAL-LIABILITIES>                          765070570
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    4898327334
<SHARES-COMMON-STOCK>                           703593
<SHARES-COMMON-PRIOR>                           756323
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                      (16367699)
<ACCUMULATED-NET-GAINS>                      809433432
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    2535208257
<NET-ASSETS>                                8226601324
<DIVIDEND-INCOME>                             26526360
<INTEREST-INCOME>                              5131965
<OTHER-INCOME>                                (206430)
<EXPENSES-NET>                              (47397596)
<NET-INVESTMENT-INCOME>                     (15945701)
<REALIZED-GAINS-CURRENT>                     773495378
<APPREC-INCREASE-CURRENT>                   1318839792
<NET-CHANGE-FROM-OPS>                       2076389469
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                     (1548492)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          38090
<NUMBER-OF-SHARES-REDEEMED>                   (143649)
<SHARES-REINVESTED>                              52829
<NET-CHANGE-IN-ASSETS>                      1691799749
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    582534965
<OVERDISTRIB-NII-PRIOR>                       (421998)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         15925860
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               48125358
<AVERAGE-NET-ASSETS>                        7382393721
<PER-SHARE-NAV-BEGIN>                            25.77
<PER-SHARE-NII>                                   0.04
<PER-SHARE-GAIN-APPREC>                           8.08
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (2.14)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              31.75
<EXPENSE-RATIO>                                   0.61



</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 031
   <NAME> MFS INTERNATIONAL OPPORTUNITIES FUND - CLASS A
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               MAR-31-2000
<INVESTMENTS-AT-COST>                          1509825
<INVESTMENTS-AT-VALUE>                         2016181
<RECEIVABLES>                                    28004
<ASSETS-OTHER>                                       7
<OTHER-ITEMS-ASSETS>                              3949
<TOTAL-ASSETS>                                 2048141
<PAYABLE-FOR-SECURITIES>                         55343
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           77
<TOTAL-LIABILITIES>                              55420
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       1322898
<SHARES-COMMON-STOCK>                             6614
<SHARES-COMMON-PRIOR>                             9246
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                          (7528)
<ACCUMULATED-NET-GAINS>                         171180
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        506171
<NET-ASSETS>                                   1992721
<DIVIDEND-INCOME>                                 5890
<INTEREST-INCOME>                                 1494
<OTHER-INCOME>                                   (749)
<EXPENSES-NET>                                 (14091)
<NET-INVESTMENT-INCOME>                         (7456)
<REALIZED-GAINS-CURRENT>                        179419
<APPREC-INCREASE-CURRENT>                       476581
<NET-CHANGE-FROM-OPS>                           648544
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                       (12575)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                           1136
<NUMBER-OF-SHARES-REDEEMED>                     (4643)
<SHARES-REINVESTED>                                875
<NET-CHANGE-IN-ASSETS>                          885954
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                       227371
<OVERDISTRIB-NII-PRIOR>                           (72)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                             7850
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  29385
<AVERAGE-NET-ASSETS>                           1603527
<PER-SHARE-NAV-BEGIN>                            13.15
<PER-SHARE-NII>                                 (0.08)
<PER-SHARE-GAIN-APPREC>                           6.59
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (2.51)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              17.15
<EXPENSE-RATIO>                                   1.77


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 032
   <NAME> MFS INTERNATIONAL OPPORTUNITIES FUND - CLASS I
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               MAR-31-2000
<INVESTMENTS-AT-COST>                          1509825
<INVESTMENTS-AT-VALUE>                         2016181
<RECEIVABLES>                                    28004
<ASSETS-OTHER>                                       7
<OTHER-ITEMS-ASSETS>                              3949
<TOTAL-ASSETS>                                 2048141
<PAYABLE-FOR-SECURITIES>                         55343
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           77
<TOTAL-LIABILITIES>                              55420
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       1322898
<SHARES-COMMON-STOCK>                           109527
<SHARES-COMMON-PRIOR>                            74874
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                          (7528)
<ACCUMULATED-NET-GAINS>                         171180
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        506171
<NET-ASSETS>                                   1992721
<DIVIDEND-INCOME>                                 5890
<INTEREST-INCOME>                                 1494
<OTHER-INCOME>                                   (749)
<EXPENSES-NET>                                 (14091)
<NET-INVESTMENT-INCOME>                         (7456)
<REALIZED-GAINS-CURRENT>                        179419
<APPREC-INCREASE-CURRENT>                       476581
<NET-CHANGE-FROM-OPS>                           648544
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                      (223035)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          24543
<NUMBER-OF-SHARES-REDEEMED>                     (5410)
<SHARES-REINVESTED>                              15520
<NET-CHANGE-IN-ASSETS>                          885954
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                       227371
<OVERDISTRIB-NII-PRIOR>                           (72)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                             7850
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  29385
<AVERAGE-NET-ASSETS>                           1603527
<PER-SHARE-NAV-BEGIN>                            13.16
<PER-SHARE-NII>                                 (0.07)
<PER-SHARE-GAIN-APPREC>                           6.58
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (2.51)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              17.16
<EXPENSE-RATIO>                                   1.78


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 041
   <NAME> MFS INTERNATIONAL STRATEGIC GROWTH FUND - CLASS A
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               MAR-31-2000
<INVESTMENTS-AT-COST>                          1657782
<INVESTMENTS-AT-VALUE>                         1957217
<RECEIVABLES>                                    69628
<ASSETS-OTHER>                                       7
<OTHER-ITEMS-ASSETS>                              8926
<TOTAL-ASSETS>                                 2035778
<PAYABLE-FOR-SECURITIES>                         41629
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           95
<TOTAL-LIABILITIES>                              41724
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       1547795
<SHARES-COMMON-STOCK>                            23356
<SHARES-COMMON-PRIOR>                            18840
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                          (5225)
<ACCUMULATED-NET-GAINS>                         152095
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        299389
<NET-ASSETS>                                   1994054
<DIVIDEND-INCOME>                                 8643
<INTEREST-INCOME>                                 1987
<OTHER-INCOME>                                  (1035)
<EXPENSES-NET>                                 (14621)
<NET-INVESTMENT-INCOME>                         (5026)
<REALIZED-GAINS-CURRENT>                        159890
<APPREC-INCREASE-CURRENT>                       266664
<NET-CHANGE-FROM-OPS>                           421528
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        (180)
<DISTRIBUTIONS-OF-GAINS>                       (48541)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                           1337
<NUMBER-OF-SHARES-REDEEMED>                      (577)
<SHARES-REINVESTED>                               3756
<NET-CHANGE-IN-ASSETS>                          725484
<ACCUMULATED-NII-PRIOR>                            822
<ACCUMULATED-GAINS-PRIOR>                       267898
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                             8145
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  28540
<AVERAGE-NET-ASSETS>                           1664044
<PER-SHARE-NAV-BEGIN>                            13.44
<PER-SHARE-NII>                                 (0.04)
<PER-SHARE-GAIN-APPREC>                           3.74
<PER-SHARE-DIVIDEND>                            (0.01)
<PER-SHARE-DISTRIBUTIONS>                       (2.56)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              14.57
<EXPENSE-RATIO>                                   1.78



</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 042
   <NAME> MFS INTERNATIONAL STRATEGIC GROWTH FUND - CLASS I
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               MAR-31-2000
<INVESTMENTS-AT-COST>                          1657782
<INVESTMENTS-AT-VALUE>                         1957217
<RECEIVABLES>                                    69628
<ASSETS-OTHER>                                       7
<OTHER-ITEMS-ASSETS>                              8926
<TOTAL-ASSETS>                                 2035778
<PAYABLE-FOR-SECURITIES>                         41629
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           95
<TOTAL-LIABILITIES>                              41724
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       1547795
<SHARES-COMMON-STOCK>                           113187
<SHARES-COMMON-PRIOR>                            75343
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                          (5225)
<ACCUMULATED-NET-GAINS>                         152095
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        299389
<NET-ASSETS>                                   1994054
<DIVIDEND-INCOME>                                 8643
<INTEREST-INCOME>                                 1987
<OTHER-INCOME>                                  (1035)
<EXPENSES-NET>                                 (14621)
<NET-INVESTMENT-INCOME>                         (5026)
<REALIZED-GAINS-CURRENT>                        159890
<APPREC-INCREASE-CURRENT>                       266664
<NET-CHANGE-FROM-OPS>                           421528
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        (841)
<DISTRIBUTIONS-OF-GAINS>                      (227152)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          21340
<NUMBER-OF-SHARES-REDEEMED>                     (1033)
<SHARES-REINVESTED>                              17537
<NET-CHANGE-IN-ASSETS>                          725484
<ACCUMULATED-NII-PRIOR>                            822
<ACCUMULATED-GAINS-PRIOR>                       267898
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                             8145
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  28540
<AVERAGE-NET-ASSETS>                           1664044
<PER-SHARE-NAV-BEGIN>                            13.48
<PER-SHARE-NII>                                 (0.04)
<PER-SHARE-GAIN-APPREC>                           3.74
<PER-SHARE-DIVIDEND>                            (0.01)
<PER-SHARE-DISTRIBUTIONS>                       (2.56)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              14.61
<EXPENSE-RATIO>                                   1.78



</TABLE>

<TABLE> <S> <C>

  <ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 051
   <NAME> MFS INTERNATIONAL VALUE FUND CLASS A
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               MAR-31-2000
<INVESTMENTS-AT-COST>                          793,114
<INVESTMENTS-AT-VALUE>                         987,984
<RECEIVABLES>                                    4,525
<ASSETS-OTHER>                                       7
<OTHER-ITEMS-ASSETS>                             6,473
<TOTAL-ASSETS>                                 998,989
<PAYABLE-FOR-SECURITIES>                           622
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            0
<TOTAL-LIABILITIES>                                622
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       712,667
<SHARES-COMMON-STOCK>                           81,564
<SHARES-COMMON-PRIOR>                           70,135
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                         (4,637)
<ACCUMULATED-NET-GAINS>                         95,760
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       194,577
<NET-ASSETS>                                   998,367
<DIVIDEND-INCOME>                               10,091
<INTEREST-INCOME>                                1,221
<OTHER-INCOME>                                 (1,472)
<EXPENSES-NET>                                 (9,245)
<NET-INVESTMENT-INCOME>                            595
<REALIZED-GAINS-CURRENT>                       101,565
<APPREC-INCREASE-CURRENT>                       92,802
<NET-CHANGE-FROM-OPS>                          194,962
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        4,280
<DISTRIBUTIONS-OF-GAINS>                       212,682
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                    (7,907)
<SHARES-REINVESTED>                             19,336
<NET-CHANGE-IN-ASSETS>                       (135,512)
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                      221,069
<OVERDISTRIB-NII-PRIOR>                            666
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            5,149
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 25,149
<AVERAGE-NET-ASSETS>                         1,053,486
<PER-SHARE-NAV-BEGIN>                            13.24
<PER-SHARE-NII>                                   0.01
<PER-SHARE-GAIN-APPREC>                           2.29
<PER-SHARE-DIVIDEND>                            (0.07)
<PER-SHARE-DISTRIBUTIONS>                       (3.23)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              12.24
<EXPENSE-RATIO>                                   1.78


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 052
   <NAME> MFS INTERNATIONAL VALUE FUND CLASS I
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               MAR-31-2000
<INVESTMENTS-AT-COST>                          793,114
<INVESTMENTS-AT-VALUE>                         987,984
<RECEIVABLES>                                    4,525
<ASSETS-OTHER>                                       7
<OTHER-ITEMS-ASSETS>                             6,473
<TOTAL-ASSETS>                                 998,989
<PAYABLE-FOR-SECURITIES>                           622
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            0
<TOTAL-LIABILITIES>                                622
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       712,667
<SHARES-COMMON-STOCK>                           12,977
<SHARES-COMMON-PRIOR>                           15,488
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                         (4,637)
<ACCUMULATED-NET-GAINS>                         95,760
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       194,577
<NET-ASSETS>                                   998,367
<DIVIDEND-INCOME>                               10,091
<INTEREST-INCOME>                                1,221
<OTHER-INCOME>                                 (1,472)
<EXPENSES-NET>                                 (9,245)
<NET-INVESTMENT-INCOME>                            595
<REALIZED-GAINS-CURRENT>                       101,565
<APPREC-INCREASE-CURRENT>                       92,802
<NET-CHANGE-FROM-OPS>                          194,962
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                          286
<DISTRIBUTIONS-OF-GAINS>                        14,192
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          3,786
<NUMBER-OF-SHARES-REDEEMED>                   (20,548)
<SHARES-REINVESTED>                              1,287
<NET-CHANGE-IN-ASSETS>                       (135,512)
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                      221,069
<OVERDISTRIB-NII-PRIOR>                            666
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            5,149
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 25,149
<AVERAGE-NET-ASSETS>                         1,053,486
<PER-SHARE-NAV-BEGIN>                            13.25
<PER-SHARE-NII>                                 (0.01)
<PER-SHARE-GAIN-APPREC>                           2.30
<PER-SHARE-DIVIDEND>                            (0.07)
<PER-SHARE-DISTRIBUTIONS>                       (3.23)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              12.24
<EXPENSE-RATIO>                                   1.78


</TABLE>


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